Quantitative Assessment of Distributed Generation Benefits to Improve Power System Indices

Abstract

In this paper, a novel approach is proposed to assess and quantifying some of the technical benefits of Distributed Generation (DG) based on a set of indices. The proposed indices are: Voltage Profile Improvement index, Network Loss Reduction index, Line Capacity Release index and Greenhouse Gases Effect Reduction index. The Zanjan Regional Electric Company (ZREC) power system network has been simulated by DIgSILENT software and proposed indices have been determined in different scenarios. These scenarios have been developed considering the number of busses with DG connection, geographically dispersed substations with installed DGs and the capacity of the installed DG. The study results have been presented and discussed to illustrate quantitatively usefulness of utilizing distributed generation technologies in bulk power system.